Can anyone give me websites or any other examples of how to write a proposal?

Question

For a Business class a very basic proposal

Answer 1

Here's one:

Dear martha,
we've known each other since our infant years, and when we first went to the dance, I knew you were the one...

Seriously, it depends what kind of proposal. Do you mean for a PhD? Or a masters thesis? Is it a science subject, a social science, humanities?

When you decide what kind, you'll be able to find the answer easier. A lot of books on "how to get a PhD" have sample proposals.